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Updated: Jan 26, 2026

Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery
Published on: November 28, 2018
Intraoperative assessment of pulmonary artery pressure using transesophageal echocardiography in patients undergoing
John F Zaki1, Muaz Aijazi2, Michael A Wong1
1Division of Cardiovascular and Thoracic Anesthesiology, Department of Anesthesiology, The University of Texas Health Science Center at Houston (UTHealth), McGovern Medical SchoolHouston Texas.
Abstract:
We performed a retrospective chart review to investigate a potential relation between pulmonary artery (PA) diameter as measured by intraoperative transesophageal echocardiography and PA pressures measured by PA catheter with the aim of determining whether main PA diameter can aid clinicians in the diagnosis of PA hypertension. A total of 82 adult patients undergoing cardiac surgery were included in our study. Main PA diameter showed a moderate correlation with systolic and diastolic pressures, r = 0.576 (95% confidence interval [CI], 0.407-0.703), P < 0.001, and r = 0.504 (95% CI, 0.319-0.648), P < 0.001, respectively. The authors believe that although a moderate correlation exists between main PA diameter and PA pressure, confounding hemodynamic variables prevent main PA diameter from being an accurate and reliable means of diagnosing PA hypertension.
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